US 12,230,242 B2
Sound gathering device for voiceprint monitoring and preparation method
Yong Li, Jiangsu (CN); Ting Chen, Jiangsu (CN); Ling Ju, Jiangsu (CN); Jijing Yin, Jiangsu (CN); Ze Zhang, Jiangsu (CN); Xingchun Xu, Jiangsu (CN); Beibei Weng, Jiangsu (CN); Zhenguo Chuai, Jiangsu (CN); Yan Wu, Jiangsu (CN); Li Chen, Jiangsu (CN); Yang Cheng, Jiangsu (CN); Tianyu He, Jiangsu (CN); Le Yuan, Jiangsu (CN); Jie Qian, Jiangsu (CN); Debao Tang, Jiangsu (CN); Yanquan Zhu, Jiangsu (CN); Anqi Ding, Jiangsu (CN); Kaiming Bian, Jiangsu (CN); Wen Chen, Jiangsu (CN); Wanjian Hu, Jiangsu (CN); Hongbo Dai, Jiangsu (CN); and Weijun Shi, Jiangsu (CN)
Assigned to State Grid Jiangsu Taizhou Power Supply Company, Jiangsu (CN)
Appl. No. 18/555,247
Filed by State Grid Jiangsu Taizhou Power Supply Company, Jiangsu (CN)
PCT Filed Jul. 20, 2023, PCT No. PCT/CN2023/108399
§ 371(c)(1), (2) Date Oct. 12, 2023,
PCT Pub. No. WO2024/032345, PCT Pub. Date Feb. 15, 2024.
Claims priority of application No. 202210965809.2 (CN), filed on Aug. 12, 2022.
Prior Publication US 2024/0428773 A1, Dec. 26, 2024
Int. Cl. G01R 31/50 (2020.01); G01H 17/00 (2006.01); G10K 11/26 (2006.01); G10K 13/00 (2006.01); H02H 1/00 (2006.01); H04R 1/32 (2006.01); H04R 1/34 (2006.01)
CPC G10K 13/00 (2013.01) 14 Claims
OG exemplary drawing
 
1. A sound gathering device for voiceprint monitoring, wherein the sound gathering device is a cone structure and comprises a front end portion and a rear end portion, the front end portion is trumpet-shaped, an inner wall surface of the front end portion is configured to present a pattern array of microstructures, and the pattern array of microstructures is formed by laser etching;
a sound wave frequency monitored by the sound gathering device is 50 Hz˜10 kHz, and a sound wave enters the sound gathering device from an entrance of the front end portion, is reflected through the pattern array of microstructures on the inner wall surface of the front end portion, and is transmitted from an exit of the rear end portion, and a sound pressure of the exit of the rear end portion is 4 times˜8 times a sound pressure of the entrance of the front end portion.